From: Andrea Arcangeli <andrea@suse.de>
To: kuznet@ms2.inr.ac.ru
Cc: Manfred Spraul <manfred@colorfullife.COM>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Re: softirq buggy
Date: Mon, 9 Apr 2001 20:26:18 +0200 [thread overview]
Message-ID: <20010409202618.B8138@athlon.random> (raw)
In-Reply-To: <3AD1D4A3.1E7FACD8@colorfullife.com> <200104091748.VAA03998@ms2.inr.ac.ru>
In-Reply-To: <200104091748.VAA03998@ms2.inr.ac.ru>; from kuznet@ms2.inr.ac.ru on Mon, Apr 09, 2001 at 09:48:02PM +0400
On Mon, Apr 09, 2001 at 09:48:02PM +0400, kuznet@ms2.inr.ac.ru wrote:
> Hello!
>
> > Btw, you don't schedule the ksoftirqd thread if do_softirq() returns
> > from the 'if(in_interrupt())' check.
>
> ksoftirqd will not be switched to before the first schedule
> or ret form syscall, when softirqs will be processed in any case.
> So, wake up in this case would be mistake.
Agreed.
> The _real_ problem is softirqs generated from another softirqs:
> additonal thread is made _not_ to speed up softirqs, but to _tame_
> them (if I understood Andres's explanations correctly).
Exactly.
Andrea
next prev parent reply other threads:[~2001-04-09 18:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <000401c0b319517fea9@local>
2001-03-25 23:10 ` Serial port latency Pavel Machek
2001-03-29 7:58 ` Manfred Spraul
2001-03-30 22:36 ` Pavel Machek
2001-03-31 22:09 ` Manfred Spraul
2001-04-03 23:07 ` softirq buggy [Re: Serial port latency] Pavel Machek
2001-04-04 21:18 ` Manfred Spraul
2001-04-06 12:00 ` Pavel Machek
2001-04-07 22:28 ` Manfred Spraul
2001-04-08 16:58 ` kuznet
2001-04-08 17:21 ` Manfred Spraul
2001-04-08 17:58 ` kuznet
2001-04-08 18:16 ` Manfred Spraul
2001-04-08 21:35 ` [PATCH] Re: softirq buggy Manfred Spraul
2001-04-09 8:42 ` Albert D. Cahalan
2001-04-09 13:50 ` Andrea Arcangeli
2001-04-09 15:26 ` Manfred Spraul
2001-04-09 17:31 ` Andrea Arcangeli
2001-04-09 17:48 ` kuznet
2001-04-09 18:26 ` Andrea Arcangeli [this message]
2001-04-10 0:37 ` Serial port latency Andrea Arcangeli
2001-04-09 11:37 [PATCH] Re: softirq buggy Studierende der Universitaet des Saarlandes
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